Gaya APA
Pretesting. (1997).
Depok:
Al-Qudwah Publishing.
Gaya Chicago
Pretesting.
.
Depok:
Al-Qudwah Publishing,
1997.
Text.
Gaya MLA
Pretesting.
.
Depok:
Al-Qudwah Publishing,
1997.
Text.
Gaya Turabian
Pretesting.
Depok:
Al-Qudwah Publishing,
1997.
Print.